Investors & landlords

I sold a rental property and included the sale under Rentals and Royalties. Reading through your replies to others, I showed a gain on each asset like water heater, roof, and equipment I depreciated. On the Sales Information Page I put in the asset sales price separating structure from land. I also calculated the expenses for each. My question....am I paying double capital gains as assets such as roof and water heater are already included in the price on the sales information page and then shown as sold for a gain on the rental assets and depreciation page.  Help!